As an airborne allergy sufferer myself, it's been kind of worrying over the last few days to see an insistent few insist they don''t exist.
I suffer from one. They really do. I've seen them. Suffered first hand.
If you don't suffer from one, or know someone who has, count yourself lucky.
I have eyes swell up. Doesn't take a leap of imagination to think that throats could too if suffering a more severe reaction.
Difference with me is that I'm not hundreds of miles up in the sky away from medical access. Being in an airport/public place not comparable to being locked in an aeroplane, thousands of miles from land.